大深度地层水土压力计算的影响因素探讨

Investigation on Influencing Factors of Earth Pressure in Deep Soil

我国近年迎来了地下空间开发利用的热潮,随着浅层地下的逐步开发,有必要对大深度地下空间的开发利用进行研究,因此就需要弄清楚其水土压力特性,这方面的研究也是国内外所缺乏的。本文大致介绍了目前的研究成果和日本在大深度地层开发中的一些经验,对比分析了国内各地规范关于水土压力的常规计算方法。基于以上内容,探讨了大深度地层水土压力计算时应考虑的重要因素,认为应采用水土分算法,同时考虑应力路径、渗流、超静孔隙水压、蠕变和实际工况等带来的影响。

Enthusiasm on underground development occurred in China recently,with the gradual development of shallow underground space in some metropolitans of China,the research on deep underground space would be necessary.Consequently,the investigation,on earth pressure of deep soil which was insufficient now was needed.This paper introduced some present researches on shallow underground space and engineering experiences from Japan on the utilization of deep underground space firstly,then contrasted and analyzed different technical codes in China about earth pressure.Based on all above,this paper discussed important factors on calculation of earth pressure in deep soil,showing that separate calculation should be adopted and the stress path,seepage,excess pore water pressure,creepage and practical condition should be taken into account.